How much of your dog’s behavior can actually be changed through training—and how much was determined by genetics before you ever brought them home?

Dog genetics influence everything from prey drive and guarding behavior to confidence, sociability, energy, fear, and the way a dog responds to its environment. But as dogs have moved from working beside us to primarily living as pets, our expectations of them have changed dramatically.

I wanted to understand what happens when the dog we want conflicts with the dog genetics gave us.

Liam McArthur has spent more than a decade training dogs and working with everything from difficult behavioral cases to high-level working and protection dogs.

He’s the founder of LM-K9, co-founder of the MNTR Mentorship Programme, co-founder and instructor at the World Decoy Association, an active dog sport competitor, and an international instructor working with trainers and handlers around the world.

But Liam’s understanding of genetics started with his own dog.

At 20 years old, he bought a Doberman named Hugo.

Liam had researched the breed and imagined the confident, powerful protection dog he had read about. Instead, Hugo was fearful, reactive toward people, and scared of situations Liam expected a Doberman to handle confidently.

That dog ultimately changed the trajectory of Liam’s life.

And his story raises a much bigger question:

Are many of the dog behavior problems we struggle with today actually the result of asking dogs to live lives their genetics never prepared them for?

We discussed:

– How genetics affect dog behavior and temperament.
– How much dog training can actually change.
– Why breed alone doesn’t tell you exactly what an individual dog will become.
– Why owners often choose dogs they aren’t prepared to live with.
– The difference between a working breed and a true working dog.
– Why high-drive working dogs can struggle in ordinary pet homes.
– Prey drive, defense drive, confidence, sociability, and temperament.
– Why a Husky pulling on the leash may be doing exactly what humans bred it to do.
– When behavior should be trained and when it needs to be managed.
– Why Liam believes fulfillment is misunderstood in modern dog ownership.
– Protection dogs and what separates aggression from a genetically stable working dog.
– Why too much control too early can suppress a young working dog’s potential.
– Working-line vs. show-line dogs.
– What happens when breeders select dogs for appearance instead of function.
– Whether working breeds can retain their identity after losing the jobs that created them.
– What the future of working dogs could look like as technology replaces more of their traditional roles.

One story from the conversation stuck with me.

Liam worked with a Rottweiler whose owners wanted him to comfortably sit underneath tables at busy pubs and restaurants. They were approaching it as a training problem.

Liam asked them a different question:

Does your dog actually want to be there?

That question gets to the heart of this episode.

Humans have spent thousands of years selectively breeding dogs to hunt, herd, guard, retrieve, pull, track, protect, kill vermin, move livestock, and work beside us.

Now many of those same dogs live in apartments and suburban homes, and we can become frustrated when the traits we deliberately put into them show up in everyday life.

Training matters enormously. Liam makes that clear.

But training also has limits.

Understanding the dog standing in front of us requires understanding its breed, bloodline, genetics, temperament, history, and the purpose humans originally created it to serve.

That relationship between dogs and humans is exactly what The Doggopedia exists to explore.

I’m Jeff Greene, founder of The Doggopedia, and our mission is to travel the world documenting the breeds, people, cultures, history, and working traditions behind humanity’s oldest partnership.

If you enjoyed the conversation, subscribe to The Doggopedia, share the episode with another dog owner, and let me know in the comments:

Have you ever gotten a dog that turned out completely different from what you expected?

Follow Liam McArthur:
Instagram: @lm_k9training
LM-K9: professional dog training, working dogs, protection work, and education.

#DogTraining #DogBehavior #DogGenetics #WorkingDogs #Doggopedia

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